technical but interesting Tale of the Red-winged Blackbird: A Case Study of Varnish Removal from a Watercolor Painting

"Before proceeding with treatment, the conservators and curator asked several essential questions: Did the artist apply the varnish? Why was it applied and what was it composed of? Could the varnish be removed without damage to the watercolor below? Using various analytical techniques, answers to these questions began to unfold during further study of the painting..."